#include <stdio.h>
// Write a C program to toggle the 5th bit (0-based index) of a given integer.
// The program should take an integer N as input.
// It should toggle the 5th bit of N
// Note: The 5th bit is at position 5(0-based indexing).
int toggle_bit5(int n){
return n^(1 << 5);
}
int main(){
int n;
scanf("%d",&n);
printf("%d",toggle_bit5(n));
return 0;
}